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Finding the Fourth Proportional to 553,853.01, 830,705.70 and 154,460.34

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Solution

The fourth proportional to 553,853.01, 830,705.70 and 154,460.34 is: 231,669.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,853.01 : 830,705.70 = 154,460.34 : x
  2. Step 2: Convert to fraction form
    553,853.01/830,705.70 = 154,460.34/x
  3. Step 3: Cross multiply
    553,853.01x = 830,705.70 × 154,460.34
  4. Step 4: Simplify right side
    553,853.01x = 128,311,084,861.94
  5. Step 5: Solve for x
    x = 128,311,084,861.94/553,853.01
  6. Step 6: Final answer
    x = 231,669.92

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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.