Home / 385,237.20-577,272.60-260,432.40

Finding the Fourth Proportional to 385,237.20, 577,272.60 and 260,432.40

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Solution

The fourth proportional to 385,237.20, 577,272.60 and 260,432.40 is: 390,254.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,237.20 : 577,272.60 = 260,432.40 : x
  2. Step 2: Convert to fraction form
    385,237.20/577,272.60 = 260,432.40/x
  3. Step 3: Cross multiply
    385,237.20x = 577,272.60 × 260,432.40
  4. Step 4: Simplify right side
    385,237.20x = 150,340,488,672.24
  5. Step 5: Solve for x
    x = 150,340,488,672.24/385,237.20
  6. Step 6: Final answer
    x = 390,254.34

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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.