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Finding the Fourth Proportional to 342,017.40, 512,442.90 and 291,862.20

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Solution

The fourth proportional to 342,017.40, 512,442.90 and 291,862.20 is: 437,295.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,017.40 : 512,442.90 = 291,862.20 : x
  2. Step 2: Convert to fraction form
    342,017.40/512,442.90 = 291,862.20/x
  3. Step 3: Cross multiply
    342,017.40x = 512,442.90 × 291,862.20
  4. Step 4: Simplify right side
    342,017.40x = 149,562,712,168.38
  5. Step 5: Solve for x
    x = 149,562,712,168.38/342,017.40
  6. Step 6: Final answer
    x = 437,295.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.