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Finding the Fourth Proportional to 207,085.60, 310,671.60 and 118,266.40

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Solution

The fourth proportional to 207,085.60, 310,671.60 and 118,266.40 is: 177,424.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,085.60 : 310,671.60 = 118,266.40 : x
  2. Step 2: Convert to fraction form
    207,085.60/310,671.60 = 118,266.40/x
  3. Step 3: Cross multiply
    207,085.60x = 310,671.60 × 118,266.40
  4. Step 4: Simplify right side
    207,085.60x = 36,742,011,714.24
  5. Step 5: Solve for x
    x = 36,742,011,714.24/207,085.60
  6. Step 6: Final answer
    x = 177,424.27

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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.