Home / 312,012,001.80-468,018,002.70-221,312,737.80

Finding the Fourth Proportional to 312,012,001.80, 468,018,002.70 and 221,312,737.80

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Solution

The fourth proportional to 312,012,001.80, 468,018,002.70 and 221,312,737.80 is: 331,969,106.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,012,001.80 : 468,018,002.70 = 221,312,737.80 : x
  2. Step 2: Convert to fraction form
    312,012,001.80/468,018,002.70 = 221,312,737.80/x
  3. Step 3: Cross multiply
    312,012,001.80x = 468,018,002.70 × 221,312,737.80
  4. Step 4: Simplify right side
    312,012,001.80x = 103,578,345,517,224,800
  5. Step 5: Solve for x
    x = 103,578,345,517,224,800/312,012,001.80
  6. Step 6: Final answer
    x = 331,969,106.70

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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.