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Finding the Fourth Proportional to 342,356.04, 472,442.50 and 189,390.28

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Solution

The fourth proportional to 342,356.04, 472,442.50 and 189,390.28 is: 261,353.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,356.04 : 472,442.50 = 189,390.28 : x
  2. Step 2: Convert to fraction form
    342,356.04/472,442.50 = 189,390.28/x
  3. Step 3: Cross multiply
    342,356.04x = 472,442.50 × 189,390.28
  4. Step 4: Simplify right side
    342,356.04x = 89,476,017,358.90
  5. Step 5: Solve for x
    x = 89,476,017,358.90/342,356.04
  6. Step 6: Final answer
    x = 261,353.70

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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.