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Finding the Fourth Proportional to 429,667.70, 644,501.55 and 243,043.70

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Solution

The fourth proportional to 429,667.70, 644,501.55 and 243,043.70 is: 364,565.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,667.70 : 644,501.55 = 243,043.70 : x
  2. Step 2: Convert to fraction form
    429,667.70/644,501.55 = 243,043.70/x
  3. Step 3: Cross multiply
    429,667.70x = 644,501.55 × 243,043.70
  4. Step 4: Simplify right side
    429,667.70x = 156,642,041,367.74
  5. Step 5: Solve for x
    x = 156,642,041,367.74/429,667.70
  6. Step 6: Final answer
    x = 364,565.55

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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.