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Finding the Fourth Proportional to 207,019,569.80, 310,529,354.70 and 202,988,491.40

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Solution

The fourth proportional to 207,019,569.80, 310,529,354.70 and 202,988,491.40 is: 304,482,737.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,019,569.80 : 310,529,354.70 = 202,988,491.40 : x
  2. Step 2: Convert to fraction form
    207,019,569.80/310,529,354.70 = 202,988,491.40/x
  3. Step 3: Cross multiply
    207,019,569.80x = 310,529,354.70 × 202,988,491.40
  4. Step 4: Simplify right side
    207,019,569.80x = 63,033,885,245,968,496
  5. Step 5: Solve for x
    x = 63,033,885,245,968,496/207,019,569.80
  6. Step 6: Final answer
    x = 304,482,737.10

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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.