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Finding the Fourth Proportional to 652,075.40, 978,285.90 and 231,307.40

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Solution

The fourth proportional to 652,075.40, 978,285.90 and 231,307.40 is: 347,022.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,075.40 : 978,285.90 = 231,307.40 : x
  2. Step 2: Convert to fraction form
    652,075.40/978,285.90 = 231,307.40/x
  3. Step 3: Cross multiply
    652,075.40x = 978,285.90 × 231,307.40
  4. Step 4: Simplify right side
    652,075.40x = 226,284,767,985.66
  5. Step 5: Solve for x
    x = 226,284,767,985.66/652,075.40
  6. Step 6: Final answer
    x = 347,022.40

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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.