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Finding the Fourth Proportional to 210,763.98, 290,888.72 and 156,675.42

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Solution

The fourth proportional to 210,763.98, 290,888.72 and 156,675.42 is: 216,237.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,763.98 : 290,888.72 = 156,675.42 : x
  2. Step 2: Convert to fraction form
    210,763.98/290,888.72 = 156,675.42/x
  3. Step 3: Cross multiply
    210,763.98x = 290,888.72 × 156,675.42
  4. Step 4: Simplify right side
    210,763.98x = 45,575,111,973.88
  5. Step 5: Solve for x
    x = 45,575,111,973.88/210,763.98
  6. Step 6: Final answer
    x = 216,237.67

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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.