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Finding the Fourth Proportional to 310,308.26, 428,225.80 and 176,172.26

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Solution

The fourth proportional to 310,308.26, 428,225.80 and 176,172.26 is: 243,117.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,308.26 : 428,225.80 = 176,172.26 : x
  2. Step 2: Convert to fraction form
    310,308.26/428,225.80 = 176,172.26/x
  3. Step 3: Cross multiply
    310,308.26x = 428,225.80 × 176,172.26
  4. Step 4: Simplify right side
    310,308.26x = 75,441,506,976.31
  5. Step 5: Solve for x
    x = 75,441,506,976.31/310,308.26
  6. Step 6: Final answer
    x = 243,117.95

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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.