Home / 312,012,073.80-468,018,110.70-221,312,809.80

Finding the Fourth Proportional to 312,012,073.80, 468,018,110.70 and 221,312,809.80

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Solution

The fourth proportional to 312,012,073.80, 468,018,110.70 and 221,312,809.80 is: 331,969,214.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,012,073.80 : 468,018,110.70 = 221,312,809.80 : x
  2. Step 2: Convert to fraction form
    312,012,073.80/468,018,110.70 = 221,312,809.80/x
  3. Step 3: Cross multiply
    312,012,073.80x = 468,018,110.70 × 221,312,809.80
  4. Step 4: Simplify right side
    312,012,073.80x = 103,578,403,116,304,448
  5. Step 5: Solve for x
    x = 103,578,403,116,304,448/312,012,073.80
  6. Step 6: Final answer
    x = 331,969,214.70

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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.