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Finding the Fourth Proportional to 350,146, 525,219.64 and 87,490

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Solution

The fourth proportional to 350,146, 525,219.64 and 87,490 is: 131,235.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,146 : 525,219.64 = 87,490 : x
  2. Step 2: Convert to fraction form
    350,146/525,219.64 = 87,490/x
  3. Step 3: Cross multiply
    350,146x = 525,219.64 × 87,490
  4. Step 4: Simplify right side
    350,146x = 45,951,466,303.60
  5. Step 5: Solve for x
    x = 45,951,466,303.60/350,146
  6. Step 6: Final answer
    x = 131,235.16

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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.