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Finding the Fourth Proportional to 257,332.94, 385,987.05 and 70,344.86

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Solution

The fourth proportional to 257,332.94, 385,987.05 and 70,344.86 is: 105,513.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,332.94 : 385,987.05 = 70,344.86 : x
  2. Step 2: Convert to fraction form
    257,332.94/385,987.05 = 70,344.86/x
  3. Step 3: Cross multiply
    257,332.94x = 385,987.05 × 70,344.86
  4. Step 4: Simplify right side
    257,332.94x = 27,152,204,994.06
  5. Step 5: Solve for x
    x = 27,152,204,994.06/257,332.94
  6. Step 6: Final answer
    x = 105,513.91

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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.