Home / 280,680,746.40-387,319,766.72-163,197,741.74

Finding the Fourth Proportional to 280,680,746.40, 387,319,766.72 and 163,197,741.74

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Solution

The fourth proportional to 280,680,746.40, 387,319,766.72 and 163,197,741.74 is: 225,201,450.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,680,746.40 : 387,319,766.72 = 163,197,741.74 : x
  2. Step 2: Convert to fraction form
    280,680,746.40/387,319,766.72 = 163,197,741.74/x
  3. Step 3: Cross multiply
    280,680,746.40x = 387,319,766.72 × 163,197,741.74
  4. Step 4: Simplify right side
    280,680,746.40x = 63,209,711,257,215,024
  5. Step 5: Solve for x
    x = 63,209,711,257,215,024/280,680,746.40
  6. Step 6: Final answer
    x = 225,201,450.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.