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Finding the Fourth Proportional to 287,909.93, 397,317.08 and 158,848.40

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Solution

The fourth proportional to 287,909.93, 397,317.08 and 158,848.40 is: 219,211.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,909.93 : 397,317.08 = 158,848.40 : x
  2. Step 2: Convert to fraction form
    287,909.93/397,317.08 = 158,848.40/x
  3. Step 3: Cross multiply
    287,909.93x = 397,317.08 × 158,848.40
  4. Step 4: Simplify right side
    287,909.93x = 63,113,182,450.67
  5. Step 5: Solve for x
    x = 63,113,182,450.67/287,909.93
  6. Step 6: Final answer
    x = 219,211.55

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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.