Home / 280,635.32-387,285.36-153,319.16

Finding the Fourth Proportional to 280,635.32, 387,285.36 and 153,319.16

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Solution

The fourth proportional to 280,635.32, 387,285.36 and 153,319.16 is: 211,585.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,635.32 : 387,285.36 = 153,319.16 : x
  2. Step 2: Convert to fraction form
    280,635.32/387,285.36 = 153,319.16/x
  3. Step 3: Cross multiply
    280,635.32x = 387,285.36 × 153,319.16
  4. Step 4: Simplify right side
    280,635.32x = 59,378,266,075.50
  5. Step 5: Solve for x
    x = 59,378,266,075.50/280,635.32
  6. Step 6: Final answer
    x = 211,585.15

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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.