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Finding the Fourth Proportional to 408,038.10, 612,057.15 and 141,710.10

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Solution

The fourth proportional to 408,038.10, 612,057.15 and 141,710.10 is: 212,565.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,038.10 : 612,057.15 = 141,710.10 : x
  2. Step 2: Convert to fraction form
    408,038.10/612,057.15 = 141,710.10/x
  3. Step 3: Cross multiply
    408,038.10x = 612,057.15 × 141,710.10
  4. Step 4: Simplify right side
    408,038.10x = 86,734,679,932.22
  5. Step 5: Solve for x
    x = 86,734,679,932.22/408,038.10
  6. Step 6: Final answer
    x = 212,565.15

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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.