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Finding the Fourth Proportional to 310,596.25, 465,904.71 and 85,937.86

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Solution

The fourth proportional to 310,596.25, 465,904.71 and 85,937.86 is: 128,909.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,596.25 : 465,904.71 = 85,937.86 : x
  2. Step 2: Convert to fraction form
    310,596.25/465,904.71 = 85,937.86/x
  3. Step 3: Cross multiply
    310,596.25x = 465,904.71 × 85,937.86
  4. Step 4: Simplify right side
    310,596.25x = 40,038,853,741.32
  5. Step 5: Solve for x
    x = 40,038,853,741.32/310,596.25
  6. Step 6: Final answer
    x = 128,909.65

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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.