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Finding the Fourth Proportional to 659,598, 989,347.26 and 210,300.72

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Solution

The fourth proportional to 659,598, 989,347.26 and 210,300.72 is: 315,435.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,598 : 989,347.26 = 210,300.72 : x
  2. Step 2: Convert to fraction form
    659,598/989,347.26 = 210,300.72/x
  3. Step 3: Cross multiply
    659,598x = 989,347.26 × 210,300.72
  4. Step 4: Simplify right side
    659,598x = 208,060,441,108.03
  5. Step 5: Solve for x
    x = 208,060,441,108.03/659,598
  6. Step 6: Final answer
    x = 315,435.22

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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.