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Finding the Fourth Proportional to 507,617.30, 761,427.66 and 128,537.85

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Solution

The fourth proportional to 507,617.30, 761,427.66 and 128,537.85 is: 192,807.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,617.30 : 761,427.66 = 128,537.85 : x
  2. Step 2: Convert to fraction form
    507,617.30/761,427.66 = 128,537.85/x
  3. Step 3: Cross multiply
    507,617.30x = 761,427.66 × 128,537.85
  4. Step 4: Simplify right side
    507,617.30x = 97,872,274,346.93
  5. Step 5: Solve for x
    x = 97,872,274,346.93/507,617.30
  6. Step 6: Final answer
    x = 192,807.21

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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.