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Finding the Fourth Proportional to 438,049.64, 604,536.72 and 256,695.50

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Solution

The fourth proportional to 438,049.64, 604,536.72 and 256,695.50 is: 354,256.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,049.64 : 604,536.72 = 256,695.50 : x
  2. Step 2: Convert to fraction form
    438,049.64/604,536.72 = 256,695.50/x
  3. Step 3: Cross multiply
    438,049.64x = 604,536.72 × 256,695.50
  4. Step 4: Simplify right side
    438,049.64x = 155,181,855,608.76
  5. Step 5: Solve for x
    x = 155,181,855,608.76/438,049.64
  6. Step 6: Final answer
    x = 354,256.32

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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.