Home / 487,919.20-731,878.80-239,087.20

Finding the Fourth Proportional to 487,919.20, 731,878.80 and 239,087.20

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Solution

The fourth proportional to 487,919.20, 731,878.80 and 239,087.20 is: 358,630.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,919.20 : 731,878.80 = 239,087.20 : x
  2. Step 2: Convert to fraction form
    487,919.20/731,878.80 = 239,087.20/x
  3. Step 3: Cross multiply
    487,919.20x = 731,878.80 × 239,087.20
  4. Step 4: Simplify right side
    487,919.20x = 174,982,853,031.36
  5. Step 5: Solve for x
    x = 174,982,853,031.36/487,919.20
  6. Step 6: Final answer
    x = 358,630.80

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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.