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Finding the Fourth Proportional to 608,531.78, 912,603.51 and 209,076.26

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Solution

The fourth proportional to 608,531.78, 912,603.51 and 209,076.26 is: 313,547.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,531.78 : 912,603.51 = 209,076.26 : x
  2. Step 2: Convert to fraction form
    608,531.78/912,603.51 = 209,076.26/x
  3. Step 3: Cross multiply
    608,531.78x = 912,603.51 × 209,076.26
  4. Step 4: Simplify right side
    608,531.78x = 190,803,728,733.67
  5. Step 5: Solve for x
    x = 190,803,728,733.67/608,531.78
  6. Step 6: Final answer
    x = 313,547.68

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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.