Home / 288,880,579.12-398,655,971.88-156,721,575.64

Finding the Fourth Proportional to 288,880,579.12, 398,655,971.88 and 156,721,575.64

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Solution

The fourth proportional to 288,880,579.12, 398,655,971.88 and 156,721,575.64 is: 216,276,193.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,880,579.12 : 398,655,971.88 = 156,721,575.64 : x
  2. Step 2: Convert to fraction form
    288,880,579.12/398,655,971.88 = 156,721,575.64/x
  3. Step 3: Cross multiply
    288,880,579.12x = 398,655,971.88 × 156,721,575.64
  4. Step 4: Simplify right side
    288,880,579.12x = 62,477,992,051,329,128
  5. Step 5: Solve for x
    x = 62,477,992,051,329,128/288,880,579.12
  6. Step 6: Final answer
    x = 216,276,193.58

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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.