Home / 399,225.79-549,533.19-348,148.40

Finding the Fourth Proportional to 399,225.79, 549,533.19 and 348,148.40

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Solution

The fourth proportional to 399,225.79, 549,533.19 and 348,148.40 is: 479,225.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,225.79 : 549,533.19 = 348,148.40 : x
  2. Step 2: Convert to fraction form
    399,225.79/549,533.19 = 348,148.40/x
  3. Step 3: Cross multiply
    399,225.79x = 549,533.19 × 348,148.40
  4. Step 4: Simplify right side
    399,225.79x = 191,319,103,524.79
  5. Step 5: Solve for x
    x = 191,319,103,524.79/399,225.79
  6. Step 6: Final answer
    x = 479,225.31

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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.