Home / 287,130,161.52-396,237,607.20-156,749,969.52

Finding the Fourth Proportional to 287,130,161.52, 396,237,607.20 and 156,749,969.52

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Solution

The fourth proportional to 287,130,161.52, 396,237,607.20 and 156,749,969.52 is: 216,313,857.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,130,161.52 : 396,237,607.20 = 156,749,969.52 : x
  2. Step 2: Convert to fraction form
    287,130,161.52/396,237,607.20 = 156,749,969.52/x
  3. Step 3: Cross multiply
    287,130,161.52x = 396,237,607.20 × 156,749,969.52
  4. Step 4: Simplify right side
    287,130,161.52x = 62,110,232,851,277,736
  5. Step 5: Solve for x
    x = 62,110,232,851,277,736/287,130,161.52
  6. Step 6: Final answer
    x = 216,313,857.53

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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.