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Finding the Fourth Proportional to 342,098.75, 472,075.95 and 189,127.79

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Solution

The fourth proportional to 342,098.75, 472,075.95 and 189,127.79 is: 260,985.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,098.75 : 472,075.95 = 189,127.79 : x
  2. Step 2: Convert to fraction form
    342,098.75/472,075.95 = 189,127.79/x
  3. Step 3: Cross multiply
    342,098.75x = 472,075.95 × 189,127.79
  4. Step 4: Simplify right side
    342,098.75x = 89,282,682,050.58
  5. Step 5: Solve for x
    x = 89,282,682,050.58/342,098.75
  6. Step 6: Final answer
    x = 260,985.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.