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Finding the Fourth Proportional to 346,018.80, 515,588.55 and 308,289

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Solution

The fourth proportional to 346,018.80, 515,588.55 and 308,289 is: 459,368.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,018.80 : 515,588.55 = 308,289 : x
  2. Step 2: Convert to fraction form
    346,018.80/515,588.55 = 308,289/x
  3. Step 3: Cross multiply
    346,018.80x = 515,588.55 × 308,289
  4. Step 4: Simplify right side
    346,018.80x = 158,950,278,490.95
  5. Step 5: Solve for x
    x = 158,950,278,490.95/346,018.80
  6. Step 6: Final answer
    x = 459,368.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.