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Finding the Fourth Proportional to 286,527.04, 429,642.24 and 128,619.52

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Solution

The fourth proportional to 286,527.04, 429,642.24 and 128,619.52 is: 192,862.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,527.04 : 429,642.24 = 128,619.52 : x
  2. Step 2: Convert to fraction form
    286,527.04/429,642.24 = 128,619.52/x
  3. Step 3: Cross multiply
    286,527.04x = 429,642.24 × 128,619.52
  4. Step 4: Simplify right side
    286,527.04x = 55,260,378,680.52
  5. Step 5: Solve for x
    x = 55,260,378,680.52/286,527.04
  6. Step 6: Final answer
    x = 192,862.70

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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.