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Finding the Fourth Proportional to 375,422.18, 518,095.53 and 205,656.30

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Solution

The fourth proportional to 375,422.18, 518,095.53 and 205,656.30 is: 283,812.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,422.18 : 518,095.53 = 205,656.30 : x
  2. Step 2: Convert to fraction form
    375,422.18/518,095.53 = 205,656.30/x
  3. Step 3: Cross multiply
    375,422.18x = 518,095.53 × 205,656.30
  4. Step 4: Simplify right side
    375,422.18x = 106,549,609,746.34
  5. Step 5: Solve for x
    x = 106,549,609,746.34/375,422.18
  6. Step 6: Final answer
    x = 283,812.78

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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.