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Finding the Fourth Proportional to 218,567.35, 301,630.40 and 127,931.77

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Solution

The fourth proportional to 218,567.35, 301,630.40 and 127,931.77 is: 176,550.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,567.35 : 301,630.40 = 127,931.77 : x
  2. Step 2: Convert to fraction form
    218,567.35/301,630.40 = 127,931.77/x
  3. Step 3: Cross multiply
    218,567.35x = 301,630.40 × 127,931.77
  4. Step 4: Simplify right side
    218,567.35x = 38,588,110,957.81
  5. Step 5: Solve for x
    x = 38,588,110,957.81/218,567.35
  6. Step 6: Final answer
    x = 176,550.21

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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.