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Finding the Fourth Proportional to 342,132.32, 472,130.64 and 187,087.20

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Solution

The fourth proportional to 342,132.32, 472,130.64 and 187,087.20 is: 258,173.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,132.32 : 472,130.64 = 187,087.20 : x
  2. Step 2: Convert to fraction form
    342,132.32/472,130.64 = 187,087.20/x
  3. Step 3: Cross multiply
    342,132.32x = 472,130.64 × 187,087.20
  4. Step 4: Simplify right side
    342,132.32x = 88,329,599,471.81
  5. Step 5: Solve for x
    x = 88,329,599,471.81/342,132.32
  6. Step 6: Final answer
    x = 258,173.80

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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.