Home / 280,454.08-387,026.40-153,130.24

Finding the Fourth Proportional to 280,454.08, 387,026.40 and 153,130.24

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Solution

The fourth proportional to 280,454.08, 387,026.40 and 153,130.24 is: 211,319.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,454.08 : 387,026.40 = 153,130.24 : x
  2. Step 2: Convert to fraction form
    280,454.08/387,026.40 = 153,130.24/x
  3. Step 3: Cross multiply
    280,454.08x = 387,026.40 × 153,130.24
  4. Step 4: Simplify right side
    280,454.08x = 59,265,445,518.34
  5. Step 5: Solve for x
    x = 59,265,445,518.34/280,454.08
  6. Step 6: Final answer
    x = 211,319.61

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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.