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Finding the Fourth Proportional to 310,323.61, 428,246.76 and 174,357.55

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Solution

The fourth proportional to 310,323.61, 428,246.76 and 174,357.55 is: 240,613.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,323.61 : 428,246.76 = 174,357.55 : x
  2. Step 2: Convert to fraction form
    310,323.61/428,246.76 = 174,357.55/x
  3. Step 3: Cross multiply
    310,323.61x = 428,246.76 × 174,357.55
  4. Step 4: Simplify right side
    310,323.61x = 74,668,055,869.04
  5. Step 5: Solve for x
    x = 74,668,055,869.04/310,323.61
  6. Step 6: Final answer
    x = 240,613.52

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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.