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Finding the Fourth Proportional to 571,875.94, 857,820.07 and 172,520.17

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Solution

The fourth proportional to 571,875.94, 857,820.07 and 172,520.17 is: 258,782.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,875.94 : 857,820.07 = 172,520.17 : x
  2. Step 2: Convert to fraction form
    571,875.94/857,820.07 = 172,520.17/x
  3. Step 3: Cross multiply
    571,875.94x = 857,820.07 × 172,520.17
  4. Step 4: Simplify right side
    571,875.94x = 147,991,264,305.81
  5. Step 5: Solve for x
    x = 147,991,264,305.81/571,875.94
  6. Step 6: Final answer
    x = 258,782.11

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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.