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Finding the Fourth Proportional to 259,417.45, 389,290.20 and 152,801.20

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Solution

The fourth proportional to 259,417.45, 389,290.20 and 152,801.20 is: 229,298.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,417.45 : 389,290.20 = 152,801.20 : x
  2. Step 2: Convert to fraction form
    259,417.45/389,290.20 = 152,801.20/x
  3. Step 3: Cross multiply
    259,417.45x = 389,290.20 × 152,801.20
  4. Step 4: Simplify right side
    259,417.45x = 59,484,009,708.24
  5. Step 5: Solve for x
    x = 59,484,009,708.24/259,417.45
  6. Step 6: Final answer
    x = 229,298.41

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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.