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Finding the Fourth Proportional to 438,014.12, 604,404.59 and 256,684.55

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Solution

The fourth proportional to 438,014.12, 604,404.59 and 256,684.55 is: 354,192.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,014.12 : 604,404.59 = 256,684.55 : x
  2. Step 2: Convert to fraction form
    438,014.12/604,404.59 = 256,684.55/x
  3. Step 3: Cross multiply
    438,014.12x = 604,404.59 × 256,684.55
  4. Step 4: Simplify right side
    438,014.12x = 155,141,315,896.64
  5. Step 5: Solve for x
    x = 155,141,315,896.64/438,014.12
  6. Step 6: Final answer
    x = 354,192.50

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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.