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Finding the Fourth Proportional to 268,809.60, 403,433.10 and 260,061.60

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Solution

The fourth proportional to 268,809.60, 403,433.10 and 260,061.60 is: 390,303.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,809.60 : 403,433.10 = 260,061.60 : x
  2. Step 2: Convert to fraction form
    268,809.60/403,433.10 = 260,061.60/x
  3. Step 3: Cross multiply
    268,809.60x = 403,433.10 × 260,061.60
  4. Step 4: Simplify right side
    268,809.60x = 104,917,457,478.96
  5. Step 5: Solve for x
    x = 104,917,457,478.96/268,809.60
  6. Step 6: Final answer
    x = 390,303.98

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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.