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Finding the Fourth Proportional to 268,812.60, 403,437.60 and 260,064.60

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Solution

The fourth proportional to 268,812.60, 403,437.60 and 260,064.60 is: 390,308.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,812.60 : 403,437.60 = 260,064.60 : x
  2. Step 2: Convert to fraction form
    268,812.60/403,437.60 = 260,064.60/x
  3. Step 3: Cross multiply
    268,812.60x = 403,437.60 × 260,064.60
  4. Step 4: Simplify right side
    268,812.60x = 104,919,838,068.96
  5. Step 5: Solve for x
    x = 104,919,838,068.96/268,812.60
  6. Step 6: Final answer
    x = 390,308.48

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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.