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Finding the Fourth Proportional to 438,047.64, 604,533.96 and 256,693.50

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Solution

The fourth proportional to 438,047.64, 604,533.96 and 256,693.50 is: 354,253.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,047.64 : 604,533.96 = 256,693.50 : x
  2. Step 2: Convert to fraction form
    438,047.64/604,533.96 = 256,693.50/x
  3. Step 3: Cross multiply
    438,047.64x = 604,533.96 × 256,693.50
  4. Step 4: Simplify right side
    438,047.64x = 155,179,938,061.26
  5. Step 5: Solve for x
    x = 155,179,938,061.26/438,047.64
  6. Step 6: Final answer
    x = 354,253.56

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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.