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Finding the Fourth Proportional to 305,927.70, 458,891.55 and 260,656.80

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Solution

The fourth proportional to 305,927.70, 458,891.55 and 260,656.80 is: 390,985.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,927.70 : 458,891.55 = 260,656.80 : x
  2. Step 2: Convert to fraction form
    305,927.70/458,891.55 = 260,656.80/x
  3. Step 3: Cross multiply
    305,927.70x = 458,891.55 × 260,656.80
  4. Step 4: Simplify right side
    305,927.70x = 119,613,202,970.04
  5. Step 5: Solve for x
    x = 119,613,202,970.04/305,927.70
  6. Step 6: Final answer
    x = 390,985.20

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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.