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Finding the Fourth Proportional to 279,338.58, 385,495.98 and 158,484.96

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Solution

The fourth proportional to 279,338.58, 385,495.98 and 158,484.96 is: 218,714.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,338.58 : 385,495.98 = 158,484.96 : x
  2. Step 2: Convert to fraction form
    279,338.58/385,495.98 = 158,484.96/x
  3. Step 3: Cross multiply
    279,338.58x = 385,495.98 × 158,484.96
  4. Step 4: Simplify right side
    279,338.58x = 61,095,314,970.46
  5. Step 5: Solve for x
    x = 61,095,314,970.46/279,338.58
  6. Step 6: Final answer
    x = 218,714.20

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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.