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Finding the Fourth Proportional to 659,775.88, 989,664.78 and 238,953.16

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Solution

The fourth proportional to 659,775.88, 989,664.78 and 238,953.16 is: 358,430.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,775.88 : 989,664.78 = 238,953.16 : x
  2. Step 2: Convert to fraction form
    659,775.88/989,664.78 = 238,953.16/x
  3. Step 3: Cross multiply
    659,775.88x = 989,664.78 × 238,953.16
  4. Step 4: Simplify right side
    659,775.88x = 236,483,526,521.71
  5. Step 5: Solve for x
    x = 236,483,526,521.71/659,775.88
  6. Step 6: Final answer
    x = 358,430.09

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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.