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Finding the Fourth Proportional to 328,312.01, 492,442.10 and 103,679.17

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Solution

The fourth proportional to 328,312.01, 492,442.10 and 103,679.17 is: 155,510.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,312.01 : 492,442.10 = 103,679.17 : x
  2. Step 2: Convert to fraction form
    328,312.01/492,442.10 = 103,679.17/x
  3. Step 3: Cross multiply
    328,312.01x = 492,442.10 × 103,679.17
  4. Step 4: Simplify right side
    328,312.01x = 51,055,985,220.45
  5. Step 5: Solve for x
    x = 51,055,985,220.45/328,312.01
  6. Step 6: Final answer
    x = 155,510.56

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1.5x scale

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.