Home / 209,974.86-290,041.90-155,637.18

Finding the Fourth Proportional to 209,974.86, 290,041.90 and 155,637.18

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Solution

The fourth proportional to 209,974.86, 290,041.90 and 155,637.18 is: 214,984.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,974.86 : 290,041.90 = 155,637.18 : x
  2. Step 2: Convert to fraction form
    209,974.86/290,041.90 = 155,637.18/x
  3. Step 3: Cross multiply
    209,974.86x = 290,041.90 × 155,637.18
  4. Step 4: Simplify right side
    209,974.86x = 45,141,303,397.84
  5. Step 5: Solve for x
    x = 45,141,303,397.84/209,974.86
  6. Step 6: Final answer
    x = 214,984.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.