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Finding the Fourth Proportional to 265,720,886.70, 398,581,330.05 and 249,565,080.30

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Solution

The fourth proportional to 265,720,886.70, 398,581,330.05 and 249,565,080.30 is: 374,347,620.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,720,886.70 : 398,581,330.05 = 249,565,080.30 : x
  2. Step 2: Convert to fraction form
    265,720,886.70/398,581,330.05 = 249,565,080.30/x
  3. Step 3: Cross multiply
    265,720,886.70x = 398,581,330.05 × 249,565,080.30
  4. Step 4: Simplify right side
    265,720,886.70x = 99,471,981,640,009,056
  5. Step 5: Solve for x
    x = 99,471,981,640,009,056/265,720,886.70
  6. Step 6: Final answer
    x = 374,347,620.45

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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.