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Finding the Fourth Proportional to 421,173.54, 581,032.98 and 251,309.52

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Solution

The fourth proportional to 421,173.54, 581,032.98 and 251,309.52 is: 346,695.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,173.54 : 581,032.98 = 251,309.52 : x
  2. Step 2: Convert to fraction form
    421,173.54/581,032.98 = 251,309.52/x
  3. Step 3: Cross multiply
    421,173.54x = 581,032.98 × 251,309.52
  4. Step 4: Simplify right side
    421,173.54x = 146,019,119,307.97
  5. Step 5: Solve for x
    x = 146,019,119,307.97/421,173.54
  6. Step 6: Final answer
    x = 346,695.85

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1.5x scale

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.