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Finding the Fourth Proportional to 456,117.40, 684,111.30 and 140,606.20

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Solution

The fourth proportional to 456,117.40, 684,111.30 and 140,606.20 is: 210,889.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,117.40 : 684,111.30 = 140,606.20 : x
  2. Step 2: Convert to fraction form
    456,117.40/684,111.30 = 140,606.20/x
  3. Step 3: Cross multiply
    456,117.40x = 684,111.30 × 140,606.20
  4. Step 4: Simplify right side
    456,117.40x = 96,190,290,270.06
  5. Step 5: Solve for x
    x = 96,190,290,270.06/456,117.40
  6. Step 6: Final answer
    x = 210,889.32

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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.