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Finding the Fourth Proportional to 288,005.60, 432,008.40 and 162,034.40

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Solution

The fourth proportional to 288,005.60, 432,008.40 and 162,034.40 is: 243,051.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,005.60 : 432,008.40 = 162,034.40 : x
  2. Step 2: Convert to fraction form
    288,005.60/432,008.40 = 162,034.40/x
  3. Step 3: Cross multiply
    288,005.60x = 432,008.40 × 162,034.40
  4. Step 4: Simplify right side
    288,005.60x = 70,000,221,888.96
  5. Step 5: Solve for x
    x = 70,000,221,888.96/288,005.60
  6. Step 6: Final answer
    x = 243,051.60

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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.