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Finding the Fourth Proportional to 388,889.10, 583,236.45 and 148,950.90

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Solution

The fourth proportional to 388,889.10, 583,236.45 and 148,950.90 is: 223,389.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,889.10 : 583,236.45 = 148,950.90 : x
  2. Step 2: Convert to fraction form
    388,889.10/583,236.45 = 148,950.90/x
  3. Step 3: Cross multiply
    388,889.10x = 583,236.45 × 148,950.90
  4. Step 4: Simplify right side
    388,889.10x = 86,873,594,140.31
  5. Step 5: Solve for x
    x = 86,873,594,140.31/388,889.10
  6. Step 6: Final answer
    x = 223,389.12

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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.