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Finding the Fourth Proportional to 172,808.80, 238,490.32 and 97,362.40

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Solution

The fourth proportional to 172,808.80, 238,490.32 and 97,362.40 is: 134,368.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,808.80 : 238,490.32 = 97,362.40 : x
  2. Step 2: Convert to fraction form
    172,808.80/238,490.32 = 97,362.40/x
  3. Step 3: Cross multiply
    172,808.80x = 238,490.32 × 97,362.40
  4. Step 4: Simplify right side
    172,808.80x = 23,219,989,931.97
  5. Step 5: Solve for x
    x = 23,219,989,931.97/172,808.80
  6. Step 6: Final answer
    x = 134,368.10

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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.