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Finding the Fourth Proportional to 310,387.80, 428,303.25 and 174,400.14

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Solution

The fourth proportional to 310,387.80, 428,303.25 and 174,400.14 is: 240,654.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,387.80 : 428,303.25 = 174,400.14 : x
  2. Step 2: Convert to fraction form
    310,387.80/428,303.25 = 174,400.14/x
  3. Step 3: Cross multiply
    310,387.80x = 428,303.25 × 174,400.14
  4. Step 4: Simplify right side
    310,387.80x = 74,696,146,762.46
  5. Step 5: Solve for x
    x = 74,696,146,762.46/310,387.80
  6. Step 6: Final answer
    x = 240,654.26

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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.