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Finding the Fourth Proportional to 385,312.77, 577,825.79 and 132,522.30

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Solution

The fourth proportional to 385,312.77, 577,825.79 and 132,522.30 is: 198,734.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,312.77 : 577,825.79 = 132,522.30 : x
  2. Step 2: Convert to fraction form
    385,312.77/577,825.79 = 132,522.30/x
  3. Step 3: Cross multiply
    385,312.77x = 577,825.79 × 132,522.30
  4. Step 4: Simplify right side
    385,312.77x = 76,574,802,027.51
  5. Step 5: Solve for x
    x = 76,574,802,027.51/385,312.77
  6. Step 6: Final answer
    x = 198,734.14

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1.5x scale

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.