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Finding the Fourth Proportional to 207,123,119.70, 310,684,679.55 and 207,123,119.70

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Solution

The fourth proportional to 207,123,119.70, 310,684,679.55 and 207,123,119.70 is: 310,684,679.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,123,119.70 : 310,684,679.55 = 207,123,119.70 : x
  2. Step 2: Convert to fraction form
    207,123,119.70/310,684,679.55 = 207,123,119.70/x
  3. Step 3: Cross multiply
    207,123,119.70x = 310,684,679.55 × 207,123,119.70
  4. Step 4: Simplify right side
    207,123,119.70x = 64,349,980,071,390,792
  5. Step 5: Solve for x
    x = 64,349,980,071,390,792/207,123,119.70
  6. Step 6: Final answer
    x = 310,684,679.55

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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.