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Finding the Fourth Proportional to 472,303.32, 651,779.57 and 309,071.79

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Solution

The fourth proportional to 472,303.32, 651,779.57 and 309,071.79 is: 426,519.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,303.32 : 651,779.57 = 309,071.79 : x
  2. Step 2: Convert to fraction form
    472,303.32/651,779.57 = 309,071.79/x
  3. Step 3: Cross multiply
    472,303.32x = 651,779.57 × 309,071.79
  4. Step 4: Simplify right side
    472,303.32x = 201,446,679,158.01
  5. Step 5: Solve for x
    x = 201,446,679,158.01/472,303.32
  6. Step 6: Final answer
    x = 426,519.72

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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.