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Finding the Fourth Proportional to 553,496.42, 830,266.50 and 154,172.09

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Solution

The fourth proportional to 553,496.42, 830,266.50 and 154,172.09 is: 231,264.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,496.42 : 830,266.50 = 154,172.09 : x
  2. Step 2: Convert to fraction form
    553,496.42/830,266.50 = 154,172.09/x
  3. Step 3: Cross multiply
    553,496.42x = 830,266.50 × 154,172.09
  4. Step 4: Simplify right side
    553,496.42x = 128,003,921,561.99
  5. Step 5: Solve for x
    x = 128,003,921,561.99/553,496.42
  6. Step 6: Final answer
    x = 231,264.23

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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.