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Finding the Fourth Proportional to 390,018.50, 585,027.78 and 94,530.50

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Solution

The fourth proportional to 390,018.50, 585,027.78 and 94,530.50 is: 141,795.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,018.50 : 585,027.78 = 94,530.50 : x
  2. Step 2: Convert to fraction form
    390,018.50/585,027.78 = 94,530.50/x
  3. Step 3: Cross multiply
    390,018.50x = 585,027.78 × 94,530.50
  4. Step 4: Simplify right side
    390,018.50x = 55,302,968,557.29
  5. Step 5: Solve for x
    x = 55,302,968,557.29/390,018.50
  6. Step 6: Final answer
    x = 141,795.76

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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.