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Finding the Fourth Proportional to 553,530.68, 830,296.80 and 154,172.60

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Solution

The fourth proportional to 553,530.68, 830,296.80 and 154,172.60 is: 231,259.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,530.68 : 830,296.80 = 154,172.60 : x
  2. Step 2: Convert to fraction form
    553,530.68/830,296.80 = 154,172.60/x
  3. Step 3: Cross multiply
    553,530.68x = 830,296.80 × 154,172.60
  4. Step 4: Simplify right side
    553,530.68x = 128,009,016,427.68
  5. Step 5: Solve for x
    x = 128,009,016,427.68/553,530.68
  6. Step 6: Final answer
    x = 231,259.12

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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.