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Finding the Fourth Proportional to 330,547.68, 495,690 and 120,070.56

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Solution

The fourth proportional to 330,547.68, 495,690 and 120,070.56 is: 180,058.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,547.68 : 495,690 = 120,070.56 : x
  2. Step 2: Convert to fraction form
    330,547.68/495,690 = 120,070.56/x
  3. Step 3: Cross multiply
    330,547.68x = 495,690 × 120,070.56
  4. Step 4: Simplify right side
    330,547.68x = 59,517,775,886.40
  5. Step 5: Solve for x
    x = 59,517,775,886.40/330,547.68
  6. Step 6: Final answer
    x = 180,058.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.