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Finding the Fourth Proportional to 326,465.32, 489,780.34 and 158,066.32

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Solution

The fourth proportional to 326,465.32, 489,780.34 and 158,066.32 is: 237,139.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,465.32 : 489,780.34 = 158,066.32 : x
  2. Step 2: Convert to fraction form
    326,465.32/489,780.34 = 158,066.32/x
  3. Step 3: Cross multiply
    326,465.32x = 489,780.34 × 158,066.32
  4. Step 4: Simplify right side
    326,465.32x = 77,417,775,952.15
  5. Step 5: Solve for x
    x = 77,417,775,952.15/326,465.32
  6. Step 6: Final answer
    x = 237,139.36

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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.