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Finding the Fourth Proportional to 659,018.16, 988,643.84 and 248,678.64

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Solution

The fourth proportional to 659,018.16, 988,643.84 and 248,678.64 is: 373,061.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,018.16 : 988,643.84 = 248,678.64 : x
  2. Step 2: Convert to fraction form
    659,018.16/988,643.84 = 248,678.64/x
  3. Step 3: Cross multiply
    659,018.16x = 988,643.84 × 248,678.64
  4. Step 4: Simplify right side
    659,018.16x = 245,854,605,575.58
  5. Step 5: Solve for x
    x = 245,854,605,575.58/659,018.16
  6. Step 6: Final answer
    x = 373,061.96

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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.