Home / 415,721.20-623,581.80-149,490.40

Finding the Fourth Proportional to 415,721.20, 623,581.80 and 149,490.40

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Solution

The fourth proportional to 415,721.20, 623,581.80 and 149,490.40 is: 224,235.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,721.20 : 623,581.80 = 149,490.40 : x
  2. Step 2: Convert to fraction form
    415,721.20/623,581.80 = 149,490.40/x
  3. Step 3: Cross multiply
    415,721.20x = 623,581.80 × 149,490.40
  4. Step 4: Simplify right side
    415,721.20x = 93,219,492,714.72
  5. Step 5: Solve for x
    x = 93,219,492,714.72/415,721.20
  6. Step 6: Final answer
    x = 224,235.60

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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.