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Finding the Fourth Proportional to 515,140.68, 772,793.91 and 248,920.77

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Solution

The fourth proportional to 515,140.68, 772,793.91 and 248,920.77 is: 373,421.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,140.68 : 772,793.91 = 248,920.77 : x
  2. Step 2: Convert to fraction form
    515,140.68/772,793.91 = 248,920.77/x
  3. Step 3: Cross multiply
    515,140.68x = 772,793.91 × 248,920.77
  4. Step 4: Simplify right side
    515,140.68x = 192,364,455,128.51
  5. Step 5: Solve for x
    x = 192,364,455,128.51/515,140.68
  6. Step 6: Final answer
    x = 373,421.21

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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.