Home / 291,154.48-402,012.18-286,504.34

Finding the Fourth Proportional to 291,154.48, 402,012.18 and 286,504.34

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Solution

The fourth proportional to 291,154.48, 402,012.18 and 286,504.34 is: 395,591.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,154.48 : 402,012.18 = 286,504.34 : x
  2. Step 2: Convert to fraction form
    291,154.48/402,012.18 = 286,504.34/x
  3. Step 3: Cross multiply
    291,154.48x = 402,012.18 × 286,504.34
  4. Step 4: Simplify right side
    291,154.48x = 115,178,234,302.86
  5. Step 5: Solve for x
    x = 115,178,234,302.86/291,154.48
  6. Step 6: Final answer
    x = 395,591.49

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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.