Finding the Fourth Proportional to 207,875,838.48, 286,865,177.40 and 115,054,359.12
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Solution
The fourth proportional to 207,875,838.48, 286,865,177.40 and 115,054,359.12 is: 158,773,089.65
Step by Step Solution
- Step 1: Write the proportion equation
207,875,838.48 : 286,865,177.40 = 115,054,359.12 : x - Step 2: Convert to fraction form
207,875,838.48/286,865,177.40 = 115,054,359.12/x - Step 3: Cross multiply
207,875,838.48x = 286,865,177.40 × 115,054,359.12 - Step 4: Simplify right side
207,875,838.48x = 33,005,089,139,602,108 - Step 5: Solve for x
x = 33,005,089,139,602,108/207,875,838.48 - Step 6: Final answer
x = 158,773,089.65
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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.