Home / 421,009.11-580,985.73-230,018.40

Finding the Fourth Proportional to 421,009.11, 580,985.73 and 230,018.40

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Solution

The fourth proportional to 421,009.11, 580,985.73 and 230,018.40 is: 317,421.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,009.11 : 580,985.73 = 230,018.40 : x
  2. Step 2: Convert to fraction form
    421,009.11/580,985.73 = 230,018.40/x
  3. Step 3: Cross multiply
    421,009.11x = 580,985.73 × 230,018.40
  4. Step 4: Simplify right side
    421,009.11x = 133,637,408,037.43
  5. Step 5: Solve for x
    x = 133,637,408,037.43/421,009.11
  6. Step 6: Final answer
    x = 317,421.65

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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.