Home / 389,835.63-537,973.11-210,987.63

Finding the Fourth Proportional to 389,835.63, 537,973.11 and 210,987.63

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Solution

The fourth proportional to 389,835.63, 537,973.11 and 210,987.63 is: 291,162.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,835.63 : 537,973.11 = 210,987.63 : x
  2. Step 2: Convert to fraction form
    389,835.63/537,973.11 = 210,987.63/x
  3. Step 3: Cross multiply
    389,835.63x = 537,973.11 × 210,987.63
  4. Step 4: Simplify right side
    389,835.63x = 113,505,671,482.63
  5. Step 5: Solve for x
    x = 113,505,671,482.63/389,835.63
  6. Step 6: Final answer
    x = 291,162.90

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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.