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Finding the Fourth Proportional to 256,609.59, 385,263.45 and 144,368.79

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Solution

The fourth proportional to 256,609.59, 385,263.45 and 144,368.79 is: 216,749.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,609.59 : 385,263.45 = 144,368.79 : x
  2. Step 2: Convert to fraction form
    256,609.59/385,263.45 = 144,368.79/x
  3. Step 3: Cross multiply
    256,609.59x = 385,263.45 × 144,368.79
  4. Step 4: Simplify right side
    256,609.59x = 55,620,018,107.73
  5. Step 5: Solve for x
    x = 55,620,018,107.73/256,609.59
  6. Step 6: Final answer
    x = 216,749.57

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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.