Home / 288,880,555.78-398,655,939.68-156,721,552.30

Finding the Fourth Proportional to 288,880,555.78, 398,655,939.68 and 156,721,552.30

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Solution

The fourth proportional to 288,880,555.78, 398,655,939.68 and 156,721,552.30 is: 216,276,161.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,880,555.78 : 398,655,939.68 = 156,721,552.30 : x
  2. Step 2: Convert to fraction form
    288,880,555.78/398,655,939.68 = 156,721,552.30/x
  3. Step 3: Cross multiply
    288,880,555.78x = 398,655,939.68 × 156,721,552.30
  4. Step 4: Simplify right side
    288,880,555.78x = 62,477,977,700,264,768
  5. Step 5: Solve for x
    x = 62,477,977,700,264,768/288,880,555.78
  6. Step 6: Final answer
    x = 216,276,161.38

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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.