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Finding the Fourth Proportional to 286,639.70, 429,959.55 and 235,901.30

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Solution

The fourth proportional to 286,639.70, 429,959.55 and 235,901.30 is: 353,851.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,639.70 : 429,959.55 = 235,901.30 : x
  2. Step 2: Convert to fraction form
    286,639.70/429,959.55 = 235,901.30/x
  3. Step 3: Cross multiply
    286,639.70x = 429,959.55 × 235,901.30
  4. Step 4: Simplify right side
    286,639.70x = 101,428,016,792.42
  5. Step 5: Solve for x
    x = 101,428,016,792.42/286,639.70
  6. Step 6: Final answer
    x = 353,851.95

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1.5x scale

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.