Home / 387,927.15-535,675.86-286,129.05

Finding the Fourth Proportional to 387,927.15, 535,675.86 and 286,129.05

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Solution

The fourth proportional to 387,927.15, 535,675.86 and 286,129.05 is: 395,106.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,927.15 : 535,675.86 = 286,129.05 : x
  2. Step 2: Convert to fraction form
    387,927.15/535,675.86 = 286,129.05/x
  3. Step 3: Cross multiply
    387,927.15x = 535,675.86 × 286,129.05
  4. Step 4: Simplify right side
    387,927.15x = 153,272,424,929.73
  5. Step 5: Solve for x
    x = 153,272,424,929.73/387,927.15
  6. Step 6: Final answer
    x = 395,106.21

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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.