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Finding the Fourth Proportional to 391,348.62, 540,030.51 and 230,209.74

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Solution

The fourth proportional to 391,348.62, 540,030.51 and 230,209.74 is: 317,671.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,348.62 : 540,030.51 = 230,209.74 : x
  2. Step 2: Convert to fraction form
    391,348.62/540,030.51 = 230,209.74/x
  3. Step 3: Cross multiply
    391,348.62x = 540,030.51 × 230,209.74
  4. Step 4: Simplify right side
    391,348.62x = 124,320,283,299.17
  5. Step 5: Solve for x
    x = 124,320,283,299.17/391,348.62
  6. Step 6: Final answer
    x = 317,671.45

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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.