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Finding the Fourth Proportional to 280,466.66, 387,042.44 and 153,141.34

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Solution

The fourth proportional to 280,466.66, 387,042.44 and 153,141.34 is: 211,334.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,466.66 : 387,042.44 = 153,141.34 : x
  2. Step 2: Convert to fraction form
    280,466.66/387,042.44 = 153,141.34/x
  3. Step 3: Cross multiply
    280,466.66x = 387,042.44 × 153,141.34
  4. Step 4: Simplify right side
    280,466.66x = 59,272,197,898.47
  5. Step 5: Solve for x
    x = 59,272,197,898.47/280,466.66
  6. Step 6: Final answer
    x = 211,334.20

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1.5x scale

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.