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Finding the Fourth Proportional to 310,614.78, 427,590.59 and 229,890.18

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Solution

The fourth proportional to 310,614.78, 427,590.59 and 229,890.18 is: 316,465.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,614.78 : 427,590.59 = 229,890.18 : x
  2. Step 2: Convert to fraction form
    310,614.78/427,590.59 = 229,890.18/x
  3. Step 3: Cross multiply
    310,614.78x = 427,590.59 × 229,890.18
  4. Step 4: Simplify right side
    310,614.78x = 98,298,876,551.96
  5. Step 5: Solve for x
    x = 98,298,876,551.96/310,614.78
  6. Step 6: Final answer
    x = 316,465.55

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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.