Home / 346,577.57-478,077.49-208,660.61

Finding the Fourth Proportional to 346,577.57, 478,077.49 and 208,660.61

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Solution

The fourth proportional to 346,577.57, 478,077.49 and 208,660.61 is: 287,831.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,577.57 : 478,077.49 = 208,660.61 : x
  2. Step 2: Convert to fraction form
    346,577.57/478,077.49 = 208,660.61/x
  3. Step 3: Cross multiply
    346,577.57x = 478,077.49 × 208,660.61
  4. Step 4: Simplify right side
    346,577.57x = 99,755,937,256.98
  5. Step 5: Solve for x
    x = 99,755,937,256.98/346,577.57
  6. Step 6: Final answer
    x = 287,831.49

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1.5x scale

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.