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Finding the Fourth Proportional to 291,459.02, 437,010.43 and 139,702.53

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Solution

The fourth proportional to 291,459.02, 437,010.43 and 139,702.53 is: 209,468.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,459.02 : 437,010.43 = 139,702.53 : x
  2. Step 2: Convert to fraction form
    291,459.02/437,010.43 = 139,702.53/x
  3. Step 3: Cross multiply
    291,459.02x = 437,010.43 × 139,702.53
  4. Step 4: Simplify right side
    291,459.02x = 61,051,462,707.39
  5. Step 5: Solve for x
    x = 61,051,462,707.39/291,459.02
  6. Step 6: Final answer
    x = 209,468.43

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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.