Home / 280,681.02-387,319.59-153,329.58

Finding the Fourth Proportional to 280,681.02, 387,319.59 and 153,329.58

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Solution

The fourth proportional to 280,681.02, 387,319.59 and 153,329.58 is: 211,583.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,681.02 : 387,319.59 = 153,329.58 : x
  2. Step 2: Convert to fraction form
    280,681.02/387,319.59 = 153,329.58/x
  3. Step 3: Cross multiply
    280,681.02x = 387,319.59 × 153,329.58
  4. Step 4: Simplify right side
    280,681.02x = 59,387,550,060.47
  5. Step 5: Solve for x
    x = 59,387,550,060.47/280,681.02
  6. Step 6: Final answer
    x = 211,583.78

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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.