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Finding the Fourth Proportional to 251,417.79, 346,956.55 and 138,240.54

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Solution

The fourth proportional to 251,417.79, 346,956.55 and 138,240.54 is: 190,771.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,417.79 : 346,956.55 = 138,240.54 : x
  2. Step 2: Convert to fraction form
    251,417.79/346,956.55 = 138,240.54/x
  3. Step 3: Cross multiply
    251,417.79x = 346,956.55 × 138,240.54
  4. Step 4: Simplify right side
    251,417.79x = 47,963,460,482.94
  5. Step 5: Solve for x
    x = 47,963,460,482.94/251,417.79
  6. Step 6: Final answer
    x = 190,771.94

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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.