Home / 289,218.10-434,345.55-210,421.30

Finding the Fourth Proportional to 289,218.10, 434,345.55 and 210,421.30

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Solution

The fourth proportional to 289,218.10, 434,345.55 and 210,421.30 is: 316,009.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,218.10 : 434,345.55 = 210,421.30 : x
  2. Step 2: Convert to fraction form
    289,218.10/434,345.55 = 210,421.30/x
  3. Step 3: Cross multiply
    289,218.10x = 434,345.55 × 210,421.30
  4. Step 4: Simplify right side
    289,218.10x = 91,395,555,280.22
  5. Step 5: Solve for x
    x = 91,395,555,280.22/289,218.10
  6. Step 6: Final answer
    x = 316,009.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.