Finding the Fourth Proportional to 257,866,802.72, 386,557,029.12 and 128,351,962.88
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Solution
The fourth proportional to 257,866,802.72, 386,557,029.12 and 128,351,962.88 is: 192,406,905.15
Step by Step Solution
- Step 1: Write the proportion equation
257,866,802.72 : 386,557,029.12 = 128,351,962.88 : x - Step 2: Convert to fraction form
257,866,802.72/386,557,029.12 = 128,351,962.88/x - Step 3: Cross multiply
257,866,802.72x = 386,557,029.12 × 128,351,962.88 - Step 4: Simplify right side
257,866,802.72x = 49,615,353,452,613,320 - Step 5: Solve for x
x = 49,615,353,452,613,320/257,866,802.72 - Step 6: Final answer
x = 192,406,905.15
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.