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Finding the Fourth Proportional to 311,463.15, 429,838.41 and 180,667.32

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Solution

The fourth proportional to 311,463.15, 429,838.41 and 180,667.32 is: 249,332.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,463.15 : 429,838.41 = 180,667.32 : x
  2. Step 2: Convert to fraction form
    311,463.15/429,838.41 = 180,667.32/x
  3. Step 3: Cross multiply
    311,463.15x = 429,838.41 × 180,667.32
  4. Step 4: Simplify right side
    311,463.15x = 77,657,753,567.76
  5. Step 5: Solve for x
    x = 77,657,753,567.76/311,463.15
  6. Step 6: Final answer
    x = 249,332.08

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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.