Home / 280,264,279.70-386,757,212.71-154,813,775.64

Finding the Fourth Proportional to 280,264,279.70, 386,757,212.71 and 154,813,775.64

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Solution

The fourth proportional to 280,264,279.70, 386,757,212.71 and 154,813,775.64 is: 213,638,871.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,264,279.70 : 386,757,212.71 = 154,813,775.64 : x
  2. Step 2: Convert to fraction form
    280,264,279.70/386,757,212.71 = 154,813,775.64/x
  3. Step 3: Cross multiply
    280,264,279.70x = 386,757,212.71 × 154,813,775.64
  4. Step 4: Simplify right side
    280,264,279.70x = 59,875,344,355,637,688
  5. Step 5: Solve for x
    x = 59,875,344,355,637,688/280,264,279.70
  6. Step 6: Final answer
    x = 213,638,871.21

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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.