Home / 397,929.47-549,145.98-216,642.65

Finding the Fourth Proportional to 397,929.47, 549,145.98 and 216,642.65

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Solution

The fourth proportional to 397,929.47, 549,145.98 and 216,642.65 is: 298,968.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,929.47 : 549,145.98 = 216,642.65 : x
  2. Step 2: Convert to fraction form
    397,929.47/549,145.98 = 216,642.65/x
  3. Step 3: Cross multiply
    397,929.47x = 549,145.98 × 216,642.65
  4. Step 4: Simplify right side
    397,929.47x = 118,968,437,598.32
  5. Step 5: Solve for x
    x = 118,968,437,598.32/397,929.47
  6. Step 6: Final answer
    x = 298,968.66

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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.