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Finding the Fourth Proportional to 288,911.30, 432,848.55 and 247,439.30

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Solution

The fourth proportional to 288,911.30, 432,848.55 and 247,439.30 is: 370,714.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,911.30 : 432,848.55 = 247,439.30 : x
  2. Step 2: Convert to fraction form
    288,911.30/432,848.55 = 247,439.30/x
  3. Step 3: Cross multiply
    288,911.30x = 432,848.55 × 247,439.30
  4. Step 4: Simplify right side
    288,911.30x = 107,103,742,218.02
  5. Step 5: Solve for x
    x = 107,103,742,218.02/288,911.30
  6. Step 6: Final answer
    x = 370,714.96

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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.