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Finding the Fourth Proportional to 385,885.12, 575,405.84 and 360,146.56

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Solution

The fourth proportional to 385,885.12, 575,405.84 and 360,146.56 is: 537,026.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,885.12 : 575,405.84 = 360,146.56 : x
  2. Step 2: Convert to fraction form
    385,885.12/575,405.84 = 360,146.56/x
  3. Step 3: Cross multiply
    385,885.12x = 575,405.84 × 360,146.56
  4. Step 4: Simplify right side
    385,885.12x = 207,230,433,879.91
  5. Step 5: Solve for x
    x = 207,230,433,879.91/385,885.12
  6. Step 6: Final answer
    x = 537,026.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.