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Finding the Fourth Proportional to 428,771.17, 591,689.32 and 237,802.33

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Solution

The fourth proportional to 428,771.17, 591,689.32 and 237,802.33 is: 328,158.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,771.17 : 591,689.32 = 237,802.33 : x
  2. Step 2: Convert to fraction form
    428,771.17/591,689.32 = 237,802.33/x
  3. Step 3: Cross multiply
    428,771.17x = 591,689.32 × 237,802.33
  4. Step 4: Simplify right side
    428,771.17x = 140,705,095,973.67
  5. Step 5: Solve for x
    x = 140,705,095,973.67/428,771.17
  6. Step 6: Final answer
    x = 328,158.95

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1.5x scale

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.