Home / 385,240.20-577,277.10-260,435.40

Finding the Fourth Proportional to 385,240.20, 577,277.10 and 260,435.40

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Solution

The fourth proportional to 385,240.20, 577,277.10 and 260,435.40 is: 390,258.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,240.20 : 577,277.10 = 260,435.40 : x
  2. Step 2: Convert to fraction form
    385,240.20/577,277.10 = 260,435.40/x
  3. Step 3: Cross multiply
    385,240.20x = 577,277.10 × 260,435.40
  4. Step 4: Simplify right side
    385,240.20x = 150,343,392,449.34
  5. Step 5: Solve for x
    x = 150,343,392,449.34/385,240.20
  6. Step 6: Final answer
    x = 390,258.84

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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.