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Finding the Fourth Proportional to 346,480.17, 478,008.45 and 203,187.93

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Solution

The fourth proportional to 346,480.17, 478,008.45 and 203,187.93 is: 280,320.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,480.17 : 478,008.45 = 203,187.93 : x
  2. Step 2: Convert to fraction form
    346,480.17/478,008.45 = 203,187.93/x
  3. Step 3: Cross multiply
    346,480.17x = 478,008.45 × 203,187.93
  4. Step 4: Simplify right side
    346,480.17x = 97,125,547,478.01
  5. Step 5: Solve for x
    x = 97,125,547,478.01/346,480.17
  6. Step 6: Final answer
    x = 280,320.65

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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.