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Finding the Fourth Proportional to 549,108.51, 757,763.91 and 307,393.08

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Solution

The fourth proportional to 549,108.51, 757,763.91 and 307,393.08 is: 424,199.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,108.51 : 757,763.91 = 307,393.08 : x
  2. Step 2: Convert to fraction form
    549,108.51/757,763.91 = 307,393.08/x
  3. Step 3: Cross multiply
    549,108.51x = 757,763.91 × 307,393.08
  4. Step 4: Simplify right side
    549,108.51x = 232,931,382,207.74
  5. Step 5: Solve for x
    x = 232,931,382,207.74/549,108.51
  6. Step 6: Final answer
    x = 424,199.18

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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.