Home / 346,578.07-478,078.18-208,661.11

Finding the Fourth Proportional to 346,578.07, 478,078.18 and 208,661.11

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Solution

The fourth proportional to 346,578.07, 478,078.18 and 208,661.11 is: 287,832.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,578.07 : 478,078.18 = 208,661.11 : x
  2. Step 2: Convert to fraction form
    346,578.07/478,078.18 = 208,661.11/x
  3. Step 3: Cross multiply
    346,578.07x = 478,078.18 × 208,661.11
  4. Step 4: Simplify right side
    346,578.07x = 99,756,320,271.88
  5. Step 5: Solve for x
    x = 99,756,320,271.88/346,578.07
  6. Step 6: Final answer
    x = 287,832.18

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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.