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Finding the Fourth Proportional to 346,233.69, 478,018.51 and 223,790.17

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Solution

The fourth proportional to 346,233.69, 478,018.51 and 223,790.17 is: 308,970.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,233.69 : 478,018.51 = 223,790.17 : x
  2. Step 2: Convert to fraction form
    346,233.69/478,018.51 = 223,790.17/x
  3. Step 3: Cross multiply
    346,233.69x = 478,018.51 × 223,790.17
  4. Step 4: Simplify right side
    346,233.69x = 106,975,843,616.05
  5. Step 5: Solve for x
    x = 106,975,843,616.05/346,233.69
  6. Step 6: Final answer
    x = 308,970.06

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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.