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Finding the Fourth Proportional to 495,070.60, 683,080.35 and 280,210.68

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Solution

The fourth proportional to 495,070.60, 683,080.35 and 280,210.68 is: 386,624.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,070.60 : 683,080.35 = 280,210.68 : x
  2. Step 2: Convert to fraction form
    495,070.60/683,080.35 = 280,210.68/x
  3. Step 3: Cross multiply
    495,070.60x = 683,080.35 × 280,210.68
  4. Step 4: Simplify right side
    495,070.60x = 191,406,407,660.44
  5. Step 5: Solve for x
    x = 191,406,407,660.44/495,070.60
  6. Step 6: Final answer
    x = 386,624.47

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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.