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Finding the Fourth Proportional to 346,722.75, 478,477.40 and 187,746.75

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Solution

The fourth proportional to 346,722.75, 478,477.40 and 187,746.75 is: 259,090.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,722.75 : 478,477.40 = 187,746.75 : x
  2. Step 2: Convert to fraction form
    346,722.75/478,477.40 = 187,746.75/x
  3. Step 3: Cross multiply
    346,722.75x = 478,477.40 × 187,746.75
  4. Step 4: Simplify right side
    346,722.75x = 89,832,575,859.72
  5. Step 5: Solve for x
    x = 89,832,575,859.72/346,722.75
  6. Step 6: Final answer
    x = 259,090.52

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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.