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Finding the Fourth Proportional to 209,987.70, 314,981.55 and 183,743.70

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Solution

The fourth proportional to 209,987.70, 314,981.55 and 183,743.70 is: 275,615.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,987.70 : 314,981.55 = 183,743.70 : x
  2. Step 2: Convert to fraction form
    209,987.70/314,981.55 = 183,743.70/x
  3. Step 3: Cross multiply
    209,987.70x = 314,981.55 × 183,743.70
  4. Step 4: Simplify right side
    209,987.70x = 57,875,875,428.74
  5. Step 5: Solve for x
    x = 57,875,875,428.74/209,987.70
  6. Step 6: Final answer
    x = 275,615.55

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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.