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Finding the Fourth Proportional to 867,074.40, 1,300,708.80 and 268,030.80

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Solution

The fourth proportional to 867,074.40, 1,300,708.80 and 268,030.80 is: 402,076.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,074.40 : 1,300,708.80 = 268,030.80 : x
  2. Step 2: Convert to fraction form
    867,074.40/1,300,708.80 = 268,030.80/x
  3. Step 3: Cross multiply
    867,074.40x = 1,300,708.80 × 268,030.80
  4. Step 4: Simplify right side
    867,074.40x = 348,630,020,231.04
  5. Step 5: Solve for x
    x = 348,630,020,231.04/867,074.40
  6. Step 6: Final answer
    x = 402,076.25

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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.