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Finding the Fourth Proportional to 354,895.40, 532,488.90 and 130,363.40

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Solution

The fourth proportional to 354,895.40, 532,488.90 and 130,363.40 is: 195,598.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,895.40 : 532,488.90 = 130,363.40 : x
  2. Step 2: Convert to fraction form
    354,895.40/532,488.90 = 130,363.40/x
  3. Step 3: Cross multiply
    354,895.40x = 532,488.90 × 130,363.40
  4. Step 4: Simplify right side
    354,895.40x = 69,417,063,466.26
  5. Step 5: Solve for x
    x = 69,417,063,466.26/354,895.40
  6. Step 6: Final answer
    x = 195,598.66

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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.