Home / 280,536,261.60-387,106,507.44-155,071,508.16

Finding the Fourth Proportional to 280,536,261.60, 387,106,507.44 and 155,071,508.16

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Solution

The fourth proportional to 280,536,261.60, 387,106,507.44 and 155,071,508.16 is: 213,980,144.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,536,261.60 : 387,106,507.44 = 155,071,508.16 : x
  2. Step 2: Convert to fraction form
    280,536,261.60/387,106,507.44 = 155,071,508.16/x
  3. Step 3: Cross multiply
    280,536,261.60x = 387,106,507.44 × 155,071,508.16
  4. Step 4: Simplify right side
    280,536,261.60x = 60,029,189,927,271,056
  5. Step 5: Solve for x
    x = 60,029,189,927,271,056/280,536,261.60
  6. Step 6: Final answer
    x = 213,980,144.97

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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.