Home / 391,349.02-541,148.76-310,636.42

Finding the Fourth Proportional to 391,349.02, 541,148.76 and 310,636.42

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Solution

The fourth proportional to 391,349.02, 541,148.76 and 310,636.42 is: 429,541.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,349.02 : 541,148.76 = 310,636.42 : x
  2. Step 2: Convert to fraction form
    391,349.02/541,148.76 = 310,636.42/x
  3. Step 3: Cross multiply
    391,349.02x = 541,148.76 × 310,636.42
  4. Step 4: Simplify right side
    391,349.02x = 168,100,513,493.84
  5. Step 5: Solve for x
    x = 168,100,513,493.84/391,349.02
  6. Step 6: Final answer
    x = 429,541.16

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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.