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Finding the Fourth Proportional to 185,655.20, 278,482.80 and 115,498.40

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Solution

The fourth proportional to 185,655.20, 278,482.80 and 115,498.40 is: 173,247.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,655.20 : 278,482.80 = 115,498.40 : x
  2. Step 2: Convert to fraction form
    185,655.20/278,482.80 = 115,498.40/x
  3. Step 3: Cross multiply
    185,655.20x = 278,482.80 × 115,498.40
  4. Step 4: Simplify right side
    185,655.20x = 32,164,317,827.52
  5. Step 5: Solve for x
    x = 32,164,317,827.52/185,655.20
  6. Step 6: Final answer
    x = 173,247.60

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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.