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Finding the Fourth Proportional to 280,606.40, 387,246.24 and 153,293.84

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Solution

The fourth proportional to 280,606.40, 387,246.24 and 153,293.84 is: 211,550.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,606.40 : 387,246.24 = 153,293.84 : x
  2. Step 2: Convert to fraction form
    280,606.40/387,246.24 = 153,293.84/x
  3. Step 3: Cross multiply
    280,606.40x = 387,246.24 × 153,293.84
  4. Step 4: Simplify right side
    280,606.40x = 59,362,463,155.16
  5. Step 5: Solve for x
    x = 59,362,463,155.16/280,606.40
  6. Step 6: Final answer
    x = 211,550.64

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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.