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Finding the Fourth Proportional to 628,445.47, 942,655.45 and 155,134.93

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Solution

The fourth proportional to 628,445.47, 942,655.45 and 155,134.93 is: 232,699.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,445.47 : 942,655.45 = 155,134.93 : x
  2. Step 2: Convert to fraction form
    628,445.47/942,655.45 = 155,134.93/x
  3. Step 3: Cross multiply
    628,445.47x = 942,655.45 × 155,134.93
  4. Step 4: Simplify right side
    628,445.47x = 146,238,787,249.87
  5. Step 5: Solve for x
    x = 146,238,787,249.87/628,445.47
  6. Step 6: Final answer
    x = 232,699.25

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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.