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Finding the Fourth Proportional to 489,666.66, 734,810.71 and 209,186.02

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Solution

The fourth proportional to 489,666.66, 734,810.71 and 209,186.02 is: 313,911.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,666.66 : 734,810.71 = 209,186.02 : x
  2. Step 2: Convert to fraction form
    489,666.66/734,810.71 = 209,186.02/x
  3. Step 3: Cross multiply
    489,666.66x = 734,810.71 × 209,186.02
  4. Step 4: Simplify right side
    489,666.66x = 153,712,127,878.27
  5. Step 5: Solve for x
    x = 153,712,127,878.27/489,666.66
  6. Step 6: Final answer
    x = 313,911.77

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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.