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Finding the Fourth Proportional to 256,521.06, 384,745.55 and 88,038.63

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Solution

The fourth proportional to 256,521.06, 384,745.55 and 88,038.63 is: 132,045.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,521.06 : 384,745.55 = 88,038.63 : x
  2. Step 2: Convert to fraction form
    256,521.06/384,745.55 = 88,038.63/x
  3. Step 3: Cross multiply
    256,521.06x = 384,745.55 × 88,038.63
  4. Step 4: Simplify right side
    256,521.06x = 33,872,470,680.40
  5. Step 5: Solve for x
    x = 33,872,470,680.40/256,521.06
  6. Step 6: Final answer
    x = 132,045.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.