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Finding the Fourth Proportional to 210,490.80, 316,513.80 and 176,276.40

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Solution

The fourth proportional to 210,490.80, 316,513.80 and 176,276.40 is: 265,065.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,490.80 : 316,513.80 = 176,276.40 : x
  2. Step 2: Convert to fraction form
    210,490.80/316,513.80 = 176,276.40/x
  3. Step 3: Cross multiply
    210,490.80x = 316,513.80 × 176,276.40
  4. Step 4: Simplify right side
    210,490.80x = 55,793,913,214.32
  5. Step 5: Solve for x
    x = 55,793,913,214.32/210,490.80
  6. Step 6: Final answer
    x = 265,065.80

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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.