Home / 280,843.04-387,569.40-153,530.48

Finding the Fourth Proportional to 280,843.04, 387,569.40 and 153,530.48

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Solution

The fourth proportional to 280,843.04, 387,569.40 and 153,530.48 is: 211,875.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,843.04 : 387,569.40 = 153,530.48 : x
  2. Step 2: Convert to fraction form
    280,843.04/387,569.40 = 153,530.48/x
  3. Step 3: Cross multiply
    280,843.04x = 387,569.40 × 153,530.48
  4. Step 4: Simplify right side
    280,843.04x = 59,503,716,015.31
  5. Step 5: Solve for x
    x = 59,503,716,015.31/280,843.04
  6. Step 6: Final answer
    x = 211,875.35

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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.