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Finding the Fourth Proportional to 310,948.74, 429,117.55 and 174,987.54

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Solution

The fourth proportional to 310,948.74, 429,117.55 and 174,987.54 is: 241,487.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,948.74 : 429,117.55 = 174,987.54 : x
  2. Step 2: Convert to fraction form
    310,948.74/429,117.55 = 174,987.54/x
  3. Step 3: Cross multiply
    310,948.74x = 429,117.55 × 174,987.54
  4. Step 4: Simplify right side
    310,948.74x = 75,090,224,007.86
  5. Step 5: Solve for x
    x = 75,090,224,007.86/310,948.74
  6. Step 6: Final answer
    x = 241,487.47

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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.