Home / 370,439.20-555,658.80-121,146.40

Finding the Fourth Proportional to 370,439.20, 555,658.80 and 121,146.40

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Solution

The fourth proportional to 370,439.20, 555,658.80 and 121,146.40 is: 181,719.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,439.20 : 555,658.80 = 121,146.40 : x
  2. Step 2: Convert to fraction form
    370,439.20/555,658.80 = 121,146.40/x
  3. Step 3: Cross multiply
    370,439.20x = 555,658.80 × 121,146.40
  4. Step 4: Simplify right side
    370,439.20x = 67,316,063,248.32
  5. Step 5: Solve for x
    x = 67,316,063,248.32/370,439.20
  6. Step 6: Final answer
    x = 181,719.60

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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.