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Finding the Fourth Proportional to 642,132.48, 886,133.88 and 370,200.90

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Solution

The fourth proportional to 642,132.48, 886,133.88 and 370,200.90 is: 510,872.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,132.48 : 886,133.88 = 370,200.90 : x
  2. Step 2: Convert to fraction form
    642,132.48/886,133.88 = 370,200.90/x
  3. Step 3: Cross multiply
    642,132.48x = 886,133.88 × 370,200.90
  4. Step 4: Simplify right side
    642,132.48x = 328,047,559,896.49
  5. Step 5: Solve for x
    x = 328,047,559,896.49/642,132.48
  6. Step 6: Final answer
    x = 510,872.09

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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.