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Finding the Fourth Proportional to 253,173.34, 349,364.80 and 138,430.58

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Solution

The fourth proportional to 253,173.34, 349,364.80 and 138,430.58 is: 191,026.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,173.34 : 349,364.80 = 138,430.58 : x
  2. Step 2: Convert to fraction form
    253,173.34/349,364.80 = 138,430.58/x
  3. Step 3: Cross multiply
    253,173.34x = 349,364.80 × 138,430.58
  4. Step 4: Simplify right side
    253,173.34x = 48,362,771,895.58
  5. Step 5: Solve for x
    x = 48,362,771,895.58/253,173.34
  6. Step 6: Final answer
    x = 191,026.32

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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.