Home / 312,012,004.80-468,018,007.20-221,312,740.80

Finding the Fourth Proportional to 312,012,004.80, 468,018,007.20 and 221,312,740.80

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Solution

The fourth proportional to 312,012,004.80, 468,018,007.20 and 221,312,740.80 is: 331,969,111.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,012,004.80 : 468,018,007.20 = 221,312,740.80 : x
  2. Step 2: Convert to fraction form
    312,012,004.80/468,018,007.20 = 221,312,740.80/x
  3. Step 3: Cross multiply
    312,012,004.80x = 468,018,007.20 × 221,312,740.80
  4. Step 4: Simplify right side
    312,012,004.80x = 103,578,347,917,186,144
  5. Step 5: Solve for x
    x = 103,578,347,917,186,144/312,012,004.80
  6. Step 6: Final answer
    x = 331,969,111.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.