Home / 209,001.63-288,423.95-113,509.01

Finding the Fourth Proportional to 209,001.63, 288,423.95 and 113,509.01

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Solution

The fourth proportional to 209,001.63, 288,423.95 and 113,509.01 is: 156,643.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,001.63 : 288,423.95 = 113,509.01 : x
  2. Step 2: Convert to fraction form
    209,001.63/288,423.95 = 113,509.01/x
  3. Step 3: Cross multiply
    209,001.63x = 288,423.95 × 113,509.01
  4. Step 4: Simplify right side
    209,001.63x = 32,738,717,024.79
  5. Step 5: Solve for x
    x = 32,738,717,024.79/209,001.63
  6. Step 6: Final answer
    x = 156,643.36

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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.