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Finding the Fourth Proportional to 454,312.40, 681,784.80 and 188,074.31

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Solution

The fourth proportional to 454,312.40, 681,784.80 and 188,074.31 is: 282,242.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,312.40 : 681,784.80 = 188,074.31 : x
  2. Step 2: Convert to fraction form
    454,312.40/681,784.80 = 188,074.31/x
  3. Step 3: Cross multiply
    454,312.40x = 681,784.80 × 188,074.31
  4. Step 4: Simplify right side
    454,312.40x = 128,226,201,714.29
  5. Step 5: Solve for x
    x = 128,226,201,714.29/454,312.40
  6. Step 6: Final answer
    x = 282,242.36

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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.