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Finding the Fourth Proportional to 515,406.74, 773,221.24 and 155,547.51

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Solution

The fourth proportional to 515,406.74, 773,221.24 and 155,547.51 is: 233,354.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,406.74 : 773,221.24 = 155,547.51 : x
  2. Step 2: Convert to fraction form
    515,406.74/773,221.24 = 155,547.51/x
  3. Step 3: Cross multiply
    515,406.74x = 773,221.24 × 155,547.51
  4. Step 4: Simplify right side
    515,406.74x = 120,272,640,910.67
  5. Step 5: Solve for x
    x = 120,272,640,910.67/515,406.74
  6. Step 6: Final answer
    x = 233,354.81

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1.5x scale

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.