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Finding the Fourth Proportional to 518,840.22, 716,002.14 and 286,275.20

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Solution

The fourth proportional to 518,840.22, 716,002.14 and 286,275.20 is: 395,061.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,840.22 : 716,002.14 = 286,275.20 : x
  2. Step 2: Convert to fraction form
    518,840.22/716,002.14 = 286,275.20/x
  3. Step 3: Cross multiply
    518,840.22x = 716,002.14 × 286,275.20
  4. Step 4: Simplify right side
    518,840.22x = 204,973,652,248.92
  5. Step 5: Solve for x
    x = 204,973,652,248.92/518,840.22
  6. Step 6: Final answer
    x = 395,061.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.