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Finding the Fourth Proportional to 642,132.29, 886,133.62 and 370,200.71

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Solution

The fourth proportional to 642,132.29, 886,133.62 and 370,200.71 is: 510,871.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,132.29 : 886,133.62 = 370,200.71 : x
  2. Step 2: Convert to fraction form
    642,132.29/886,133.62 = 370,200.71/x
  3. Step 3: Cross multiply
    642,132.29x = 886,133.62 × 370,200.71
  4. Step 4: Simplify right side
    642,132.29x = 328,047,297,956.96
  5. Step 5: Solve for x
    x = 328,047,297,956.96/642,132.29
  6. Step 6: Final answer
    x = 510,871.83

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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.