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Finding the Fourth Proportional to 374,978,681.90, 517,650,019.13 and 249,739,295.84

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Solution

The fourth proportional to 374,978,681.90, 517,650,019.13 and 249,739,295.84 is: 344,759,735.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,978,681.90 : 517,650,019.13 = 249,739,295.84 : x
  2. Step 2: Convert to fraction form
    374,978,681.90/517,650,019.13 = 249,739,295.84/x
  3. Step 3: Cross multiply
    374,978,681.90x = 517,650,019.13 × 249,739,295.84
  4. Step 4: Simplify right side
    374,978,681.90x = 129,277,551,269,088,736
  5. Step 5: Solve for x
    x = 129,277,551,269,088,736/374,978,681.90
  6. Step 6: Final answer
    x = 344,759,735.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.