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Finding the Fourth Proportional to 408,152.20, 612,068.10 and 155,298.40

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Solution

The fourth proportional to 408,152.20, 612,068.10 and 155,298.40 is: 232,886.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,152.20 : 612,068.10 = 155,298.40 : x
  2. Step 2: Convert to fraction form
    408,152.20/612,068.10 = 155,298.40/x
  3. Step 3: Cross multiply
    408,152.20x = 612,068.10 × 155,298.40
  4. Step 4: Simplify right side
    408,152.20x = 95,053,196,621.04
  5. Step 5: Solve for x
    x = 95,053,196,621.04/408,152.20
  6. Step 6: Final answer
    x = 232,886.65

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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.