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Finding the Fourth Proportional to 388,094.30, 535,281.45 and 342,692.18

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Solution

The fourth proportional to 388,094.30, 535,281.45 and 342,692.18 is: 472,660.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,094.30 : 535,281.45 = 342,692.18 : x
  2. Step 2: Convert to fraction form
    388,094.30/535,281.45 = 342,692.18/x
  3. Step 3: Cross multiply
    388,094.30x = 535,281.45 × 342,692.18
  4. Step 4: Simplify right side
    388,094.30x = 183,436,767,014.06
  5. Step 5: Solve for x
    x = 183,436,767,014.06/388,094.30
  6. Step 6: Final answer
    x = 472,660.30

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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.