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Finding the Fourth Proportional to 428,705.70, 591,585.03 and 237,712.02

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Solution

The fourth proportional to 428,705.70, 591,585.03 and 237,712.02 is: 328,026.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,705.70 : 591,585.03 = 237,712.02 : x
  2. Step 2: Convert to fraction form
    428,705.70/591,585.03 = 237,712.02/x
  3. Step 3: Cross multiply
    428,705.70x = 591,585.03 × 237,712.02
  4. Step 4: Simplify right side
    428,705.70x = 140,626,872,483.06
  5. Step 5: Solve for x
    x = 140,626,872,483.06/428,705.70
  6. Step 6: Final answer
    x = 328,026.60

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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.