Home / 426,507.35-639,547.01-142,097.86

Finding the Fourth Proportional to 426,507.35, 639,547.01 and 142,097.86

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Solution

The fourth proportional to 426,507.35, 639,547.01 and 142,097.86 is: 213,075.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,507.35 : 639,547.01 = 142,097.86 : x
  2. Step 2: Convert to fraction form
    426,507.35/639,547.01 = 142,097.86/x
  3. Step 3: Cross multiply
    426,507.35x = 639,547.01 × 142,097.86
  4. Step 4: Simplify right side
    426,507.35x = 90,878,257,582.17
  5. Step 5: Solve for x
    x = 90,878,257,582.17/426,507.35
  6. Step 6: Final answer
    x = 213,075.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.