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Finding the Fourth Proportional to 438,039.68, 604,624.03 and 256,790.84

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Solution

The fourth proportional to 438,039.68, 604,624.03 and 256,790.84 is: 354,447.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,039.68 : 604,624.03 = 256,790.84 : x
  2. Step 2: Convert to fraction form
    438,039.68/604,624.03 = 256,790.84/x
  3. Step 3: Cross multiply
    438,039.68x = 604,624.03 × 256,790.84
  4. Step 4: Simplify right side
    438,039.68x = 155,261,908,882.79
  5. Step 5: Solve for x
    x = 155,261,908,882.79/438,039.68
  6. Step 6: Final answer
    x = 354,447.14

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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.