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Finding the Fourth Proportional to 312,681.93, 469,017.95 and 99,446.77

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Solution

The fourth proportional to 312,681.93, 469,017.95 and 99,446.77 is: 149,168.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,681.93 : 469,017.95 = 99,446.77 : x
  2. Step 2: Convert to fraction form
    312,681.93/469,017.95 = 99,446.77/x
  3. Step 3: Cross multiply
    312,681.93x = 469,017.95 × 99,446.77
  4. Step 4: Simplify right side
    312,681.93x = 46,642,318,529.74
  5. Step 5: Solve for x
    x = 46,642,318,529.74/312,681.93
  6. Step 6: Final answer
    x = 149,168.58

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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.