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Finding the Fourth Proportional to 438,032.80, 604,614.54 and 256,783.96

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Solution

The fourth proportional to 438,032.80, 604,614.54 and 256,783.96 is: 354,437.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,032.80 : 604,614.54 = 256,783.96 : x
  2. Step 2: Convert to fraction form
    438,032.80/604,614.54 = 256,783.96/x
  3. Step 3: Cross multiply
    438,032.80x = 604,614.54 × 256,783.96
  4. Step 4: Simplify right side
    438,032.80x = 155,255,315,854.78
  5. Step 5: Solve for x
    x = 155,255,315,854.78/438,032.80
  6. Step 6: Final answer
    x = 354,437.65

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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.