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Finding the Fourth Proportional to 268,430.40, 402,904.80 and 163,454.40

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Solution

The fourth proportional to 268,430.40, 402,904.80 and 163,454.40 is: 245,339.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,430.40 : 402,904.80 = 163,454.40 : x
  2. Step 2: Convert to fraction form
    268,430.40/402,904.80 = 163,454.40/x
  3. Step 3: Cross multiply
    268,430.40x = 402,904.80 × 163,454.40
  4. Step 4: Simplify right side
    268,430.40x = 65,856,562,341.12
  5. Step 5: Solve for x
    x = 65,856,562,341.12/268,430.40
  6. Step 6: Final answer
    x = 245,339.43

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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.