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Finding the Fourth Proportional to 374,978,700.81, 517,650,045.21 and 249,739,314.75

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Solution

The fourth proportional to 374,978,700.81, 517,650,045.21 and 249,739,314.75 is: 344,759,761.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,978,700.81 : 517,650,045.21 = 249,739,314.75 : x
  2. Step 2: Convert to fraction form
    374,978,700.81/517,650,045.21 = 249,739,314.75/x
  3. Step 3: Cross multiply
    374,978,700.81x = 517,650,045.21 × 249,739,314.75
  4. Step 4: Simplify right side
    374,978,700.81x = 129,277,567,571,051,920
  5. Step 5: Solve for x
    x = 129,277,567,571,051,920/374,978,700.81
  6. Step 6: Final answer
    x = 344,759,761.80

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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.