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Finding the Fourth Proportional to 256,038.04, 353,395.74 and 155,520.28

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Solution

The fourth proportional to 256,038.04, 353,395.74 and 155,520.28 is: 214,656.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,038.04 : 353,395.74 = 155,520.28 : x
  2. Step 2: Convert to fraction form
    256,038.04/353,395.74 = 155,520.28/x
  3. Step 3: Cross multiply
    256,038.04x = 353,395.74 × 155,520.28
  4. Step 4: Simplify right side
    256,038.04x = 54,960,204,435.61
  5. Step 5: Solve for x
    x = 54,960,204,435.61/256,038.04
  6. Step 6: Final answer
    x = 214,656.40

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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.