Home / 378,040.20-565,748.10-346,547.40

Finding the Fourth Proportional to 378,040.20, 565,748.10 and 346,547.40

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Solution

The fourth proportional to 378,040.20, 565,748.10 and 346,547.40 is: 518,618.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,040.20 : 565,748.10 = 346,547.40 : x
  2. Step 2: Convert to fraction form
    378,040.20/565,748.10 = 346,547.40/x
  3. Step 3: Cross multiply
    378,040.20x = 565,748.10 × 346,547.40
  4. Step 4: Simplify right side
    378,040.20x = 196,058,533,109.94
  5. Step 5: Solve for x
    x = 196,058,533,109.94/378,040.20
  6. Step 6: Final answer
    x = 518,618.21

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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.