Home / 288,435.20-432,069.60-163,630.40

Finding the Fourth Proportional to 288,435.20, 432,069.60 and 163,630.40

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Solution

The fourth proportional to 288,435.20, 432,069.60 and 163,630.40 is: 245,114.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,435.20 : 432,069.60 = 163,630.40 : x
  2. Step 2: Convert to fraction form
    288,435.20/432,069.60 = 163,630.40/x
  3. Step 3: Cross multiply
    288,435.20x = 432,069.60 × 163,630.40
  4. Step 4: Simplify right side
    288,435.20x = 70,699,721,475.84
  5. Step 5: Solve for x
    x = 70,699,721,475.84/288,435.20
  6. Step 6: Final answer
    x = 245,114.75

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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.