Home / 280,442,360.16-387,010,620.96-156,683,037.12

Finding the Fourth Proportional to 280,442,360.16, 387,010,620.96 and 156,683,037.12

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Solution

The fourth proportional to 280,442,360.16, 387,010,620.96 and 156,683,037.12 is: 216,222,682.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,442,360.16 : 387,010,620.96 = 156,683,037.12 : x
  2. Step 2: Convert to fraction form
    280,442,360.16/387,010,620.96 = 156,683,037.12/x
  3. Step 3: Cross multiply
    280,442,360.16x = 387,010,620.96 × 156,683,037.12
  4. Step 4: Simplify right side
    280,442,360.16x = 60,637,999,489,709,928
  5. Step 5: Solve for x
    x = 60,637,999,489,709,928/280,442,360.16
  6. Step 6: Final answer
    x = 216,222,682.82

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1.5x scale

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.